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TELECOMMUNICATION OPTICAL FIBER CABLE UNDERSTANDING SIGNAL AMPLIFIERS AND AMPLIFIERS FOR DITO CABO
TELECOMMUNICATION OPTICAL FIBER CABLE UNDERSTANDING SIGNAL AMPLIFIERS AND AMPLIFIERS FOR DITO CABO
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机译:电信光纤电缆了解信号放大器和DITO CABO的放大器
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摘要
An optical fiber telecommunication line according to the invention comprises active core optical fiber amplifiers (6, 7, 8 and 9) of the transmitted signals. Two laser sources (19, 20) of pumping optical radiation are connected to each active core optical fiber present in the amplifiers (6, 7, 8 and 9) of the line, one for each end of a single active core optical fiber. Of these two laser sources (19, 20) of pumping optical radiation the first one (19) is put into service and the second one (20) is kept as reserve to be put into service when the first one fails. Moreover the two pumping optical radiation sources (19, 20) are associated to a microprocessing circuit (29) able to oblige them to send alarm signals about the state of the amplifier to the terminal stations (10, 11) of the line and to received from these latter the control signals for the exchange of functioning between the two pumping optical radiation sources (19, 20).
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